55187268 has 12 divisors (see below), whose sum is σ = 128770320. Its totient is φ = 18395752.

The previous prime is 55187263. The next prime is 55187269. The reversal of 55187268 is 86278155.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (55187263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2299458 + ... + 2299481.

It is an arithmetic number, because the mean of its divisors is an integer number (10730860).

Almost surely, 2^55187268 is an apocalyptic number.

It is an amenable number.

55187268 is an abundant number, since it is smaller than the sum of its proper divisors (73583052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55187268 is a wasteful number, since it uses less digits than its factorization.

55187268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4598946 (or 4598944 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 55187268 is about 7428.8133641922. The cubic root of 55187268 is about 380.7263761020.

It can be divided in two parts, 55187 and 268, that added together give a palindrome (55455).

The spelling of 55187268 in words is "fifty-five million, one hundred eighty-seven thousand, two hundred sixty-eight".